Struct Theme 

pub struct Theme {

    pub background: Rgb,
    pub surface: Rgb,
    pub overlay_bg: Rgb,
    pub title_bg: Rgb,
    pub status_bg: Rgb,
    pub gauge_bg: Rgb,
    pub text: Rgb,
    pub muted: Rgb,
    pub dim: Rgb,
    pub border: Rgb,
    pub accent: Rgb,
    pub accent_soft: Rgb,
    pub title_accent: Rgb,
    pub pink: Rgb,
    pub success: Rgb,
    pub warning: Rgb,
    pub error: Rgb,
    pub info: Rgb,
    pub gauge_fg: Rgb,
    pub directory: Rgb,
    pub executable: Rgb,
    pub symlink: Rgb,
    pub device: Rgb,
    pub device_warn: Rgb,
    pub hidden: Rgb,
    pub selection_bg: Rgb,
    pub selection_fg: Rgb,
    pub cursor_bg: Rgb,
    pub cursor_fg: Rgb,
    pub marked_bg: Rgb,
    pub marked_fg: Rgb,
    pub buttonbar_bg: Rgb,
    pub buttonbar_fg: Rgb,
}

A complete color theme. All slots are truecolor Rgb(u8, u8, u8).

33 slots, organised into seven semantic groups:

• Surface/background family (6): background, surface, overlay_bg, title_bg, status_bg, gauge_bg. The three-tier surface (background < surface < overlay_bg) gives cards visual lift without resorting to greyscale.
• Foreground/text family (4): text, muted, dim, border. dim deliberately fails WCAG AA-body — it is for de-emphasis only.
• Accent family (4): accent, accent_soft, title_accent, pink. accent is the brand red and is identical in both dark and light themes; title_accent is a brighter red for title bars.
• Semantic family (4): success, warning, error, info. Apps must add a non-colour cue (glyph, bold, underline) alongside these — see local/docs/RED-BEAR-TUI-THEME.md.
• Gauge (1): gauge_fg (brand-red progress fill; matches accent so a dark-accent progress bar uses the same hex as the selected-row highlight).
• File-type slots (tlc) (6): directory, executable, symlink, device, device_warn, hidden.
• Selection/cursor/marked (tlc) (8): selection_{bg,fg}, cursor_{bg,fg}, marked_{bg,fg}, buttonbar_{bg,fg}.

Fields

background: Rgb

Default panel body background.

surface: Rgb

Raised card (slightly lighter than background).

overlay_bg: Rgb

Modal/popup background (between body and card).

title_bg: Rgb

Title bar / section header background.

status_bg: Rgb

Status line / button bar background.

gauge_bg: Rgb

Progress bar unfilled portion.

text: Rgb

Primary body text.

muted: Rgb

Secondary text, labels, hints.

dim: Rgb

De-emphasized text, disabled items. AA-large only.

border: Rgb

Panel borders, separators. AA-body compliant.

accent: Rgb

Primary brand red — selection, focused borders, brand marks.

accent_soft: Rgb

Washed red — hover, secondary accents.

title_accent: Rgb

Brighter red for title bar foreground.

pink: Rgb

Highlight / favorite / active link. Used sparingly.

success: Rgb

Completed operations, online state.

warning: Rgb

Caution, pending state.

error: Rgb

Failure, destructive action.

info: Rgb

Informational badges.

gauge_fg: Rgb

Brand-red progress fill. Identical in dark and light themes (matches accent so a progress bar uses the same hex as the selected-row highlight). Apps that need a non-brand gauge fill can replace this slot per-theme (e.g. a separate cub_progress theme struct).

directory: Rgb

Folder names.

executable: Rgb

Executable (+x) files.

symlink: Rgb

Symbolic links.

device: Rgb

Device nodes (/dev/*).

device_warn: Rgb

Unmounted / error-state device.

hidden: Rgb

Dotfiles (alias of dim).

selection_bg: Rgb

Inactive selection background.

selection_fg: Rgb

Inactive selection foreground.

cursor_bg: Rgb

Active cursor line background.

cursor_fg: Rgb

Active cursor line foreground.

marked_bg: Rgb

F3-marked files background.

marked_fg: Rgb

F3-marked files foreground.

buttonbar_bg: Rgb

F-key button bar background.

buttonbar_fg: Rgb

F-key button bar foreground.

Implementations

impl Theme

pub const fn dark() -> Self

The default dark theme. Used when no theme preference is set.

pub const fn light() -> Self

The light theme. Opt in with REDBEAR_TUI_THEME=light or by calling this directly. Brand red is identical to dark.

pub fn from_env() -> Self

Pick a theme from environment. Checks REDBEAR_TUI_THEME first (values: dark, light), then falls back to the standard COLORFGBG terminal convention (light bg → light theme). Returns dark if neither is set.

Trait Implementations

impl Clone for Theme

fn clone(&self) -> Theme

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Theme

impl Debug for Theme

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Theme

impl PartialEq for Theme

fn eq(&self, other: &Theme) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Theme